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• W3202355897 abstract "Constructing highly efficient and durable non-noble metal modified carbon catalysts for oxygen reduction reaction (ORR) in the whole pH range is essential for energy conversion devices but still remains a challenge. Herein, the Fe/Fe 3 C nanoparticles and Fe-N X species anchored on the interconnected mesoporous carbon materials are fabricated through an economical and facile template-assisted polymerization-pyrolysis strategy. The catalyst exhibits unique features with the electronic interaction between Fe/Fe 3 C and Fe−N X , large specific surface area and high mesoporous structure as well as nitrogen doping in porous carbon skeletons, which can effectively catalyze ORR over the full pH range. In an alkaline electrolyte, the optimized catalyst displays favorable ORR performance with positive onset potential ( E onset = 0.91 V), half-wave potential ( E 1/2 = 0.83 V), long-term cycles stability and methanol tolerance, exceeding those for the commercial Pt/C. Furthermore, the prepared catalyst could be directly assembled into the alkaline Zn−air battery that exhibits the open-circuit voltage of 1.44 V, high power density of 96.0 mW cm −2 and long-term durability. Therefore, the template-assisted polymerization-pyrolysis strategy provides a promising route for designing high-performance non-noble metal decorated ORR electrocatalysts. The Fe/Fe 3 C nanoparticles and Fe-N X species anchored on interconnected mesoporous carbon are fabricated by a facile template-assisted polymerization-pyrolysis strategy and the prepared catalysts exhibit excellent performances for the pH-universal ORR and alkaline Zn-air battery. • Template-assisted polymerization-pyrolysis route is adopted to fabricate MFS-Fe-x. • The interconnected mesoporous structure is conducive to exposing active sites. • The synergy effect of Fe/Fe 3 C and Fe-N X has major contribution to the ORR property. • Excellent ORR performances are successfully achieved over all the pH range. • The assembled alkaline Zn-air battery shows superior power density and durability." @default.
• W3202355897 created "2021-10-11" @default.
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• W3202355897 date "2021-11-01" @default.
• W3202355897 modified "2023-09-29" @default.
• W3202355897 title "Template-assisted polymerization-pyrolysis derived mesoporous carbon anchored with Fe/Fe3C and Fe−NX species as efficient oxygen reduction catalysts for Zn-air battery" @default.
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• W3202355897 doi "https://doi.org/10.1016/j.ijhydene.2021.09.040" @default.
• W3202355897 hasPublicationYear "2021" @default.
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